Rare Max Fleischer's silent film "The Einstein Theory of Relativity, 1923"( Produced by Fleischer Studios )

source: VIMEO, the two rare originals both of which are now in the Public Domain

§ Corroborating Reference: "Relativity in the Films", by the Einstein Editor, Scientific American, August, 1922, the article of which argued that it was
much too simplistic to be of great enough value in explaining such an arcane subject to the general public without supplementary texts and other lectures, although some praise is otherwise given to a similar but financially successful German production on the same subject of special relativity.